hi all:
when i trace xhci source, I found in skip_isoc_td, there is a
possibility to increase de-queue pointer twice.
in skip_isoc_td:
/* Update ring dequeue pointer */
while (ep_ring->dequeue != td->last_trb)
inc_deq(xhci, ep_ring);
inc_deq(xhci, ep_ring);
why (ep_ring->dequeue != td->last_trb) we have to increase the dequeue pointer?
I try to find any description in spec about this but in vain.
is there any special reason to do so?
appreciate your kind help,
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